Update formatting

submodules/TelegramStringFormatting/Sources/CurrencyFormat.swift

@@ -46,6 +46,55 @@ private func loadCurrencyFormatterEntries() -> [String: CurrencyFormatterEntry]
 
 private let currencyFormatterEntries = loadCurrencyFormatterEntries()
 
+public func setupCurrencyNumberFormatter(currency: String) -> NumberFormatter {
+    guard let entry = currencyFormatterEntries[currency] ?? currencyFormatterEntries["USD"] else {
+        preconditionFailure()
+    }
+
+    var result = ""
+    if entry.symbolOnLeft {
+        result.append("¤")
+        if entry.spaceBetweenAmountAndSymbol {
+            result.append(" ")
+        }
+    }
+
+    result.append("#")
+
+    result.append(entry.decimalSeparator)
+
+    for _ in 0 ..< entry.decimalDigits {
+        result.append("#")
+    }
+    if entry.decimalDigits != 0 {
+        result.append("0")
+    }
+
+    if !entry.symbolOnLeft {
+        if entry.spaceBetweenAmountAndSymbol {
+            result.append(" ")
+        }
+        result.append("¤")
+    }
+
+    let numberFormatter = NumberFormatter()
+
+    numberFormatter.numberStyle = .currency
+
+    numberFormatter.positiveFormat = result
+    numberFormatter.negativeFormat = "-\(result)"
+
+    numberFormatter.currencySymbol = entry.symbol
+    numberFormatter.currencyDecimalSeparator = entry.decimalSeparator
+    numberFormatter.currencyGroupingSeparator = entry.thousandsSeparator
+
+    numberFormatter.minimumFractionDigits = entry.decimalDigits
+    numberFormatter.maximumFractionDigits = entry.decimalDigits
+    numberFormatter.minimumIntegerDigits = 1
+
+    return numberFormatter
+}
+
 public func fractionalToCurrencyAmount(value: Double, currency: String) -> Int64? {
     guard let entry = currencyFormatterEntries[currency] ?? currencyFormatterEntries["USD"] else {
         return nil
@@ -54,7 +103,11 @@ public func fractionalToCurrencyAmount(value: Double, currency: String) -> Int64
     for _ in 0 ..< entry.decimalDigits {
         factor *= 10.0
     }
-    return Int64(value * factor)
+    if value > Double(Int64.max) / factor {
+        return nil
+    } else {
+        return Int64(value * factor)
+    }
 }
 
 public func currencyToFractionalAmount(value: Int64, currency: String) -> Double? {